Ios UIView（附加布局支持）\切换到布局引擎Xcode崩溃
我正在处理一个奇怪的车祸，我还没有找到解决办法。 组织者中崩溃的标题是Ios UIView（附加布局支持）\切换到布局引擎Xcode崩溃,ios,swift,xcode,xcode-organizer,Ios,Swift,Xcode,Xcode Organizer,我正在处理一个奇怪的车祸，我还没有找到解决办法。 组织者中崩溃的标题是UIKit:uu 57-[UIView（AdditionalLayoutSupport）_switchToLayoutEngine:_block_invoke_2+316，整个堆栈跟踪如下所示。 我已经检查了AppDelegate中的startController（:）方法，一切似乎都很好。这可能是一个约束问题吗？还可能是什么 Last Exception Backtrace: 0 CoreFoundation
UIKit:uu 57-[UIView（AdditionalLayoutSupport）_switchToLayoutEngine:_block_invoke_2+316AppDelegatestartController（:）Last Exception Backtrace:
0 CoreFoundation 0x1d57bb38 __exceptionPreprocess + 124 (NSException.m:165)
1 libobjc.A.dylib 0x1c803062 objc_exception_throw + 34 (objc-exception.mm:521)
2 CoreFoundation 0x1d580fcc -[NSObject(NSObject) doesNotRecognizeSelector:] + 118 (NSObject.m:328)
3 CoreFoundation 0x1d57f0be ___forwarding___ + 692 (NSForwarding.m:3126)
4 CoreFoundation 0x1d4a7dc4 _CF_forwarding_prep_0 + 20
5 Foundation 0x1ded2b76 -[NSLayoutAnchor nsli_lowerIntoExpression:withCoefficient:forConstraint:] + 498 (NSLayoutAnchor.m:883)
6 Foundation 0x1de1b142 -[NSLayoutConstraint _lowerIntoExpression:reportingConstantIsRounded:] + 104 (NSLayoutConstraint.m:1723)
7 Foundation 0x1de1addc -[NSLayoutConstraint _addToEngine:integralizationAdjustment:mutuallyExclusiveConstraints:] + 120 (NSLayoutConstraint.m:1606)
8 Foundation 0x1de265b4 -[NSLayoutConstraint _addToEngine:] + 24 (NSLayoutConstraint.m:1621)
9 UIKit 0x228a88b2 __57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke_2 + 316 (NSLayoutConstraint_UIKitAdditions.m:3596)
10 Foundation 0x1de1a97e -[NSISEngine withBehaviors:performModifications:] + 258 (NSISEngine.m:1973)
11 UIKit 0x228a873a __57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke + 502 (NSLayoutConstraint_UIKitAdditions.m:3585)
12 UIKit 0x227aa5e8 -[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:] + 216 (NSLayoutConstraint_UIKitAdditions.m:3550)
13 UIKit 0x228e3654 -[UIView(AdditionalLayoutSupport) _initializeHostedLayoutEngine] + 486 (NSLayoutConstraint_UIKitAdditions.m:3333)
14 UIKit 0x228afe20 -[UIView(UIConstraintBasedLayout) _layoutEngine_windowDidChange] + 120 (NSLayoutConstraint_UIKitAdditions.m:563)
15 UIKit 0x227aa6e0 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 208 (UIView.m:12461)
16 UIKit 0x227a9ee0 __45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke + 120 (UIView.m:9478)
17 UIKit 0x227a9d6c -[UIView(Hierarchy) _postMovedFromSuperview:] + 710 (UIView.m:361)
18 UIKit 0x227b527a -[UIView(Internal) _addSubview:positioned:relativeTo:] + 1636 (UIView.m:13256)
19 UIKit 0x227b4bfe -[UIView(Hierarchy) addSubview:] + 726 (UIView.m:9004)
20 UIKit 0x227b420c -[UIWindow addRootViewControllerViewIfPossible] + 506 (UIWindow.m:1498)
21 UIKit 0x227b15b6 -[UIWindow _setHidden:forced:] + 282 (UIWindow.m:1572)
22 UIKit 0x22821154 -[UIWindow makeKeyAndVisible] + 38 (UIWindow.m:4934)
23 MyApp 0x1c3f28 AppDelegate.startController(_:) + 978 (AppDelegate.swift:207)
24 MyApp 0x1cad3c specialized AppDelegate.application(_:didFinishLaunchingWithOptions:) + 3082 (AppDelegate.swift:141)
25 MyApp 0x1c3a18 @objc AppDelegate.application(_:didFinishLaunchingWithOptions:) + 152 (<compiler-generated>:0)
26 UIKit 0x2281d5c0 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 372 (UIApplication.m:1797)
27 UIKit 0x22a1ea46 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 3702 (UIApplication.m:2129)
28 UIKit 0x22a23c18 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1636 (UIApplication.m:3625)
29 UIKit 0x22a367c0 __84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke.3149 + 36 (UIApplication.m:10365)
30 UIKit 0x22a21356 -[UIApplication workspaceDidEndTransaction:] + 138 (UIApplication.m:2989)
31 FrontBoardServices 0x1ee5cc0e __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 14 (FBSSerialQueue.m:158)
32 FrontBoardServices 0x1ee5cac8 -[FBSSerialQueue _performNext] + 216 (FBSSerialQueue.m:177)
33 FrontBoardServices 0x1ee5cdb2 -[FBSSerialQueue _performNextFromRunLoopSource] + 40 (FBSSerialQueue.m:206)
34 CoreFoundation 0x1d537fd8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8 (CFRunLoop.c:1941)
35 CoreFoundation 0x1d537b00 __CFRunLoopDoSources0 + 420 (CFRunLoop.c:1989)
36 CoreFoundation 0x1d535f4c __CFRunLoopRun + 1156 (CFRunLoop.c:2821)
37 CoreFoundation 0x1d4891aa CFRunLoopRunSpecific + 466 (CFRunLoop.c:3113)
38 CoreFoundation 0x1d488fcc CFRunLoopRunInMode + 100 (CFRunLoop.c:3143)
39 UIKit 0x22816e28 -[UIApplication _run] + 656 (UIApplication.m:2658)
40 UIKit 0x22811a4e UIApplicationMain + 146 (UIApplication.m:4089)
41 MyApp 0x68564 main + 32 (HighlightsDetailViewController.swift:62)
42 libdyld.dylib 0x1cc764e6 _dyld_process_info_notify_release + 26 (dyld_process_info_notify.cpp:327)
上次异常回溯：
0 CoreFoundation 0x1d57bb38例外预处理+124（NSException.m:165）
1 libobjc.A.dylib 0x1c803062 objc_exception_throw+34（objc exception.mm:521）
2 CoreFoundation 0x1d580fcc-[NSObject（NSObject）未识别选择器：][118（NSObject.m:328）
3 CoreFoundation 0x1d57f0be uuuuuuuuuuuuuuuuuu+692（NSForwarding.m:3126）
4 CoreFoundation 0x1d4a7dc4\u CF\u转发\u准备\u 0+20
5基金会0x1DED2B76- [ NSLAOUTAOND NSLILLUVERIN表达式：系数：约束：+] 498（NSLAOUTAXPLA.M：883）
6基金会0x1DE1B142- [ NSLAOUTUTCONTIONION LIVERIN表达式：ReavestSistangsRealNe::+ 104（NSLAOUT约束M: 1723）
7基金会0x1DE1ADDC-[ NSLAOUTOND约束No.AdtoEng:整合调整：互惠排除：：120 +（NSLAUTOUT约束，M: 1606）
8基金会0x1DE265B4- [ NSLAOUTCOND约束，AdtoOngEng::] 24（NSLAOUT约束：M: 1621）
9 UIKit 0x228a88b2 u_57-[UIView（附加布局支持）_switchToLayoutEngine:][u block_invoke_2+316（NSLayoutConstraint_UIKitAdditions.m:3596）
10基金会0x1DE1A9E-[NSISEngEng+Office：PrimultExp::] 258（NISISEng.M: 1973）
11 UIKit 0x228a873a _57-[UIView（附加布局支持）_switchToLayoutEngine:][u block_invoke+502（NSLayoutConstraint_UIKitAdditions.m:3585）
12 UIKit 0x227aa5e8-[UIView（附加布局支持）\u switchToLayoutEngine:+216（NSLayoutConstraint\u UIKitAdditions.m:3550）
13 UIKit 0x228e3654-[UIView（AdditionalLayoutSupport）_initializeHostedLayoutEngine]+486（NSLayoutConstraint_UIKitAdditions.m:3333）
14 UIKit 0x228afe20-[UIView（UIConstraintBasedLayout）\u layoutEngine\u windowDidChange]+120（NSLayoutConstraint\u UIKitAdditions.m:563）
15 UIKit 0x227aa6e0-[UIView（内部）\从窗口移动到窗口：:+208（UIView.m:12461）
16 UIKit 0x227a9ee0 \uuuu 45-[UIView（层次结构）\u postMovedFromSuperview:]\u block\u invoke+120（UIView.m:9478）
17 UIKit 0x227a9d6c-[UIView（层次结构）\u postMovedFromSuperview:+710（UIView.m:361）
18 UIKit 0x227b527a-[UIView（内部）\u addSubview:positioned:relativeTo:+1636（UIView.m:13256）
19 UIKit 0x227b4bfe-[UIView（层次结构）添加子视图：][726（UIView.m:9004）
20 UIKit 0x227b420c-[UIWindow AddRootViewControllerServiceWifPossible]+506（UIWindow.m:1498）
21 UIKit 0x227b15b6-[UIWindow\u setHidden:forced:+282（UIWindow.m:1572）
22 UIKit 0x22821154-[UIWindow makeKeyAndVisible]+38（UIWindow.m:4934）
23 MyApp 0x1c3f28 AppDelegate.startController（:）+978（AppDelegate.swift:207）
24 MyApp 0x1cad3c专用AppDelegate.应用程序（uU2;：didFinishLaunchingWithOptions:）+3082（AppDelegate.swift:141）
25 MyApp 0x1c3a18@objc AppDelegate.application（quo:didFinishLaunchingWithOptions:）+152（：0）
26 UIKit 0x2281d5c0-[UIApplication\u处理的ElegateCallbacks带选项：isSuspended:restoreState:+372（UIApplication.m:1797）
27 UIKit 0x22a1ea46-[UIApplication\u callInitializationDelegatesForMainScene:transitionContext:+3702（UIApplication.m:2129）
28 UIKit 0x22a23c18-[UIApplication\u在主场景中运行：transitionContext:completion:+1636（UIApplication.m:3625）
29 UIKit 0x22a367c0\uuuu84-[UIApplication\uHandLeapplicationActivationwithscene:transitionContext:completion:][uBlock\uInvoke.3149+36（UIApplication.m:10365）
30 UIKit 0x22a21356-[UIApplication WorkspaceDiEndTransaction:+138（UIApplication.m:2989）
31 FrontBoardServices 0x1ee5cc0e FBSSERIALQUEUE正在呼叫A区块+14（FBSSERIALQUEUE.m:158）
32 FrontBoardServices 0x1ee5cac8-[FBSSerialQueue\u performNext]+216（FBSSerialQueue.m:177）
33 FrontBoardServices 0x1ee5cdb2-[FBSSerialQueue _performNextFromRunLoopSource]+40（FBSSerialQueue.m:206）
34 CoreFoundation 0x1d537fd8\uuuu CFRUNLOOP\u正在调用\uu OUT\uu以执行功能\uuu8（CFRUNLOOP.c:1941）
35 CoreFoundation 0x1d537b00 uu CFRunLoopDoSources0+420（CFRunLoop.c:1989）
36 CoreFoundation 0x1d535f4c__CFRunLoop+1156（CFRunLoop.c:2821）
37 CoreFoundation 0x1d4891aa CFRunLoop特定+466（CFRunLoop.c:3113）
38 CoreFoundation 0x1d488fcc CFRunLoop运行模式+100（CFRunLoop.c:3143）
39 UIKit 0x22816e28-[UIApplication运行]+656（UIApplication.m:2658）
40 UIKit 0x22811a4e UIApplicationMain+146（UIApplication.m:4089）
41 MyApp 0x68564主+32（HighlightsDetailViewController.swift:62）
42 libdyld.dylib 0x1cc764e6动态过程信息通知发布+26（动态过程信息通知.cpp:327）
提前谢谢 我终于解决了这个问题。很快，崩溃只出现在iOS 10.x设备上，因为我的一些.xib文件设置了lat